Monmouth County, New Jersey
AQI 37 · Good37
Median AQI
49
90th Percentile
161
Max AQI
145
Days with Data
Ranked #2 of 15 counties in New Jersey (by median AQI, lower is better)
Monthly Median AQI — 2025
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37
Median AQI
49
90th Percentile
161
Max AQI
145
Days with Data
Ranked #2 of 15 counties in New Jersey (by median AQI, lower is better)
Click a bar to view that month's details